Centennial-scale variability of terrestrial near-surface wind speed over China from reanalysis

Abstract Investigations of variations and causes near-surface wind speed (NWS) further understanding the atmospheric changes improve ability climate analysis projections. NWS varies on multiple temporal scales; however, centennial-scale variability in associated over China remains unknown. In this study, we employ European Centre for Medium-Range Weather Forecasts (ECMWF) twentieth century reanalysis (ERA-20C) to study from 1900–2010. Meanwhile, a forward stepwise regression algorithm is used reveal relationships between large-scale ocean-atmosphere circulations. The results show three unique periods annual mean displayed decreasing trend -0.87% decade -1 -11.75% 1900–1925 1957–2010, respectively, which were caused by decreases days with strong winds, trends -6.64 -4.66 , respectively. showed an upward 55.47% 1926–1956, was increases moderate (0.43 ) winds (23.55 ). reconstructed speeds based matched well original speeds; therefore, decadal at mainly induced circulations, total explanation power 66%. strongest found winter (74%), weakest summer (46%).